Archive for mathematics

Imperial postdoc in Bayesian nonparametrics

Posted in pictures, R with tags , , , , , , , , on April 27, 2018 by xi'an

Here is another announcement for a post-doctoral position in London (UK) to work with Sarah Filippi. In the Department of Mathematics at Imperial College London. (More details on the site or in this document. Hopefully, the salary is sufficient for staying in London, if not in South Kensington!)

The post holder will work on developing a novel Bayesian Non-Parametric Test for Conditional Independence. This is at the core of modern causal discovery, itself of paramount importance throughout the sciences and in Machine Learning. As part of this project, the post holder will derive a Bayesian non-parametric testing procedure for conditional independence, scalable to high-dimensional conditioning variable. To ensure maximum impact and allow experimenters in different fields to easily apply this new methodology, the post holder will then create an open-source software package available on the R statistical programming platform. Doing so, the post holder will investigate applying this approach to real-world data from our established partners who have a track record of informing national and international bodies such as Public Health England and the World Health Organisation.

20 postdoc positions in Paris!

Posted in Kids, pictures, University life with tags , , , , , , on November 22, 2017 by xi'an

The Fondation Sciences Mathématiques de Paris (FSMP) provides funding for 20 years of post-doctoral fellowships in mathematics and in computer science for the 2018-2019 academic year. (Meaning you cannot expect a position in Paris for the coming 20 years!) Appointed fellows will hold one or two-year positions in affiliated research laboratories, starting in October 2018. This program is supported by Université Paris Sciences Lettres (PSL). If you are interested in applying for one of these fellowships, please register online. Note that the deadline is December 1!

Grothendieck’s papers on-line!

Posted in Books, Kids, University life with tags , , , on May 10, 2017 by xi'an

Today, the University of Montpellier will put on-line the series of 18,000 pages of manuscripts of Alexandre Groethendieck that it had digitised a few years ago. Thanks to the efforts of Jean-Michel Marin, the nearly incomprehensible legal imbroglio on the rights of both the University and the children of Groethendieck has been unravelled, meaning that the University is now allowed to make the manuscripts available, while the children have the sole property of the dozens of thousands of pages written by Groethendieck till his death. It is hard to imagine how such a volume can be efficiently explored and exploited to uncover new mathematical advances made by Groethendieck in the last and secluded part of his life, but at last the raw material is available for all to try.

Abel Prize goes to Yves Meyer

Posted in Books, pictures, University life with tags , , , , , , , , on March 21, 2017 by xi'an

  

Just heard the great news that the Abel Prize for 2017 goes to Yves Meyer! Yves Meyer is an emeritus professor at École Normale de Cachan and has produced fundamental contributions to number theory, operator theory and harmonic analysis. He is one of the originators of the theory of wavelets and multiresolution analysis. Among other recognitions and prizes, he was an invited speaker at the International Congress of Mathematicians in 1970 (Nice), in 1983 (Warsaw), and in 1990 (Kyoto), and was awarded the Gauß Prize in 2010. Congratulations and total respect to Yves Meyer!!!

meyer

weapons of math destruction [book review]

Posted in Books, Kids, pictures, Statistics, University life with tags , , , , , , , , , , , , , , , on December 15, 2016 by xi'an

wmd As I had read many comments and reviews about this book, including one by Arthur Charpentier, on Freakonometrics, I eventually decided to buy it from my Amazon Associate savings (!). With a strong a priori bias, I am afraid, gathered from reading some excerpts, comments, and the overall advertising about it. And also because the book reminded me of another quantic swan. Not to mention the title. After reading it, I am afraid I cannot tell my ascertainment has changed much.

“Models are opinions embedded in mathematics.” (p.21)

The core message of this book is that the use of algorithms and AI methods to evaluate and rank people is unsatisfactory and unfair. From predicting recidivism to fire high school teachers, from rejecting loan applications to enticing the most challenged categories to enlist for for-profit colleges. Which is indeed unsatisfactory and unfair. Just like using the h index and citation ranking for promotion or hiring. (The book mentions the controversial hiring of many adjunct faculty by KAU to boost its ranking.) But this conclusion is not enough of an argument to write a whole book. Or even to blame mathematics for the unfairness: as far as I can tell, mathematics has nothing to do with unfairness. Some analysts crunch numbers, produce a score, and then managers make poor decisions. The use of mathematics throughout the book is thus completely inappropriate, when the author means statistics, machine learning, data mining, predictive algorithms, neural networks, &tc. (OK, there is a small section on Operations Research on p.127, but I figure deep learning can bypass the maths.) Continue reading

Warwick campus

Posted in pictures, Travel, University life with tags , , , , , on September 3, 2014 by xi'an

quad

{Monte Carlo}²

Posted in Kids with tags , , , , on May 1, 2012 by xi'an